Added autostart patch

dwm-autostart-20210120-cb3f58a.diff

@@ -0,0 +1,179 @@
+From 37e970479dc5d40e57fc0cbfeaa5e39941483237 Mon Sep 17 00:00:00 2001
+From: Gan Ainm <gan.ainm.riomhphost@gmail.com>
+Date: Wed, 10 Jun 2020 10:59:02 +0000
+Subject: [PATCH] dwm-xdgautostart-6.2.diff
+
+===================================================================
+---
+ dwm.1 | 23 +++++++++++++++++
+ dwm.c | 82 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+ 2 files changed, 105 insertions(+)
+
+diff --git a/dwm.1 b/dwm.1
+index 13b3729..9533aa6 100644
+--- a/dwm.1
++++ b/dwm.1
+@@ -30,6 +30,14 @@ top left corner.  The tags which are applied to one or more windows are
+ indicated with an empty square in the top left corner.
+ .P
+ dwm draws a small border around windows to indicate the focus state.
++.P
++On start, dwm can start additional programs that may be specified in two special
++shell scripts (see the FILES section below), autostart_blocking.sh and
++autostart.sh.  The former is executed first and dwm will wait for its
++termination before starting.  The latter is executed in the background before
++dwm enters its handler loop.
++.P
++Either of these files may be omitted.
+ .SH OPTIONS
+ .TP
+ .B \-v
+@@ -152,6 +160,21 @@ Toggles focused window between floating and tiled state.
+ .TP
+ .B Mod1\-Button3
+ Resize focused window while dragging. Tiled windows will be toggled to the floating state.
++.SH FILES
++The files containing programs to be started along with dwm are searched for in
++the following directories:
++.IP "1. $XDG_DATA_HOME/dwm"
++.IP "2. $HOME/.local/share/dwm"
++.IP "3. $HOME/.dwm"
++.P
++The first existing directory is scanned for any of the autostart files below.
++.TP 15
++autostart.sh
++This file is started as a shell background process before dwm enters its handler
++loop.
++.TP 15
++autostart_blocking.sh
++This file is started before any autostart.sh; dwm waits for its termination.
+ .SH CUSTOMIZATION
+ dwm is customized by creating a custom config.h and (re)compiling the source
+ code. This keeps it fast, secure and simple.
+diff --git a/dwm.c b/dwm.c
+index 4465af1..2156b49 100644
+--- a/dwm.c
++++ b/dwm.c
+@@ -29,6 +29,7 @@
+ #include <string.h>
+ #include <unistd.h>
+ #include <sys/types.h>
++#include <sys/stat.h>
+ #include <sys/wait.h>
+ #include <X11/cursorfont.h>
+ #include <X11/keysym.h>
+@@ -193,6 +194,7 @@ static void resizeclient(Client *c, int x, int y, int w, int h);
+ static void resizemouse(const Arg *arg);
+ static void restack(Monitor *m);
+ static void run(void);
++static void runautostart(void);
+ static void scan(void);
+ static int sendevent(Client *c, Atom proto);
+ static void sendmon(Client *c, Monitor *m);
+@@ -235,7 +237,11 @@ static int xerrorstart(Display *dpy, XErrorEvent *ee);
+ static void zoom(const Arg *arg);
+ 
+ /* variables */
++static const char autostartblocksh[] = "autostart_blocking.sh";
++static const char autostartsh[] = "autostart.sh";
+ static const char broken[] = "broken";
++static const char dwmdir[] = "dwm";
++static const char localshare[] = ".local/share";
+ static char stext[256];
+ static int screen;
+ static int sw, sh;           /* X display screen geometry width, height */
+@@ -1380,6 +1386,83 @@ run(void)
+ 			handler[ev.type](&ev); /* call handler */
+ }
+ 
++void
++runautostart(void)
++{
++	char *pathpfx;
++	char *path;
++	char *xdgdatahome;
++	char *home;
++	struct stat sb;
++
++	if ((home = getenv("HOME")) == NULL)
++		/* this is almost impossible */
++		return;
++
++	/* if $XDG_DATA_HOME is set and not empty, use $XDG_DATA_HOME/dwm,
++	 * otherwise use ~/.local/share/dwm as autostart script directory
++	 */
++	xdgdatahome = getenv("XDG_DATA_HOME");
++	if (xdgdatahome != NULL && *xdgdatahome != '\0') {
++		/* space for path segments, separators and nul */
++		pathpfx = ecalloc(1, strlen(xdgdatahome) + strlen(dwmdir) + 2);
++
++		if (sprintf(pathpfx, "%s/%s", xdgdatahome, dwmdir) <= 0) {
++			free(pathpfx);
++			return;
++		}
++	} else {
++		/* space for path segments, separators and nul */
++		pathpfx = ecalloc(1, strlen(home) + strlen(localshare)
++		                     + strlen(dwmdir) + 3);
++
++		if (sprintf(pathpfx, "%s/%s/%s", home, localshare, dwmdir) < 0) {
++			free(pathpfx);
++			return;
++		}
++	}
++
++	/* check if the autostart script directory exists */
++	if (! (stat(pathpfx, &sb) == 0 && S_ISDIR(sb.st_mode))) {
++		/* the XDG conformant path does not exist or is no directory
++		 * so we try ~/.dwm instead
++		 */
++		char *pathpfx_new = realloc(pathpfx, strlen(home) + strlen(dwmdir) + 3);
++		if(pathpfx_new == NULL) {
++			free(pathpfx);
++			return;
++		}
++		pathpfx = pathpfx_new;
++
++		if (sprintf(pathpfx, "%s/.%s", home, dwmdir) <= 0) {
++			free(pathpfx);
++			return;
++		}
++	}
++
++	/* try the blocking script first */
++	path = ecalloc(1, strlen(pathpfx) + strlen(autostartblocksh) + 2);
++	if (sprintf(path, "%s/%s", pathpfx, autostartblocksh) <= 0) {
++		free(path);
++		free(pathpfx);
++	}
++
++	if (access(path, X_OK) == 0)
++		system(path);
++
++	/* now the non-blocking script */
++	if (sprintf(path, "%s/%s", pathpfx, autostartsh) <= 0) {
++		free(path);
++		free(pathpfx);
++	}
++
++	if (access(path, X_OK) == 0)
++		system(strcat(path, " &"));
++
++	free(pathpfx);
++	free(path);
++}
++
+ void
+ scan(void)
+ {
+@@ -2142,6 +2223,7 @@ main(int argc, char *argv[])
+ 		die("pledge");
+ #endif /* __OpenBSD__ */
+ 	scan();
++	runautostart();
+ 	run();
+ 	cleanup();
+ 	XCloseDisplay(dpy);
+-- 
+2.27.0
+

dwm.1

@@ -30,6 +30,14 @@ top left corner.  The tags which are applied to one or more windows are
 indicated with an empty square in the top left corner.
 .P
 dwm draws a small border around windows to indicate the focus state.
+.P
+On start, dwm can start additional programs that may be specified in two special
+shell scripts (see the FILES section below), autostart_blocking.sh and
+autostart.sh.  The former is executed first and dwm will wait for its
+termination before starting.  The latter is executed in the background before
+dwm enters its handler loop.
+.P
+Either of these files may be omitted.
 .SH OPTIONS
 .TP
 .B \-v
@@ -152,6 +160,21 @@ Toggles focused window between floating and tiled state.
 .TP
 .B Mod1\-Button3
 Resize focused window while dragging. Tiled windows will be toggled to the floating state.
+.SH FILES
+The files containing programs to be started along with dwm are searched for in
+the following directories:
+.IP "1. $XDG_DATA_HOME/dwm"
+.IP "2. $HOME/.local/share/dwm"
+.IP "3. $HOME/.dwm"
+.P
+The first existing directory is scanned for any of the autostart files below.
+.TP 15
+autostart.sh
+This file is started as a shell background process before dwm enters its handler
+loop.
+.TP 15
+autostart_blocking.sh
+This file is started before any autostart.sh; dwm waits for its termination.
 .SH CUSTOMIZATION
 dwm is customized by creating a custom config.h and (re)compiling the source
 code. This keeps it fast, secure and simple.

dwm.c

@@ -29,6 +29,7 @@
 #include <string.h>
 #include <unistd.h>
 #include <sys/types.h>
+#include <sys/stat.h>
 #include <sys/wait.h>
 #include <X11/cursorfont.h>
 #include <X11/keysym.h>
@@ -194,6 +195,7 @@ static void resizeclient(Client *c, int x, int y, int w, int h);
 static void resizemouse(const Arg *arg);
 static void restack(Monitor *m);
 static void run(void);
+static void runautostart(void);
 static void scan(void);
 static int sendevent(Client *c, Atom proto);
 static void sendmon(Client *c, Monitor *m);
@@ -236,7 +238,11 @@ static int xerrorstart(Display *dpy, XErrorEvent *ee);
 static void zoom(const Arg *arg);
 
 /* variables */
+static const char autostartblocksh[] = "autostart_blocking.sh";
+static const char autostartsh[] = "autostart.sh";
 static const char broken[] = "broken";
+static const char dwmdir[] = "dwm";
+static const char localshare[] = ".local/share";
 static char stext[256];
 static int screen;
 static int sw, sh;           /* X display screen geometry width, height */
@@ -1384,6 +1390,83 @@ run(void)
 			handler[ev.type](&ev); /* call handler */
 }
 
+void
+runautostart(void)
+{
+	char *pathpfx;
+	char *path;
+	char *xdgdatahome;
+	char *home;
+	struct stat sb;
+
+	if ((home = getenv("HOME")) == NULL)
+		/* this is almost impossible */
+		return;
+
+	/* if $XDG_DATA_HOME is set and not empty, use $XDG_DATA_HOME/dwm,
+	 * otherwise use ~/.local/share/dwm as autostart script directory
+	 */
+	xdgdatahome = getenv("XDG_DATA_HOME");
+	if (xdgdatahome != NULL && *xdgdatahome != '\0') {
+		/* space for path segments, separators and nul */
+		pathpfx = ecalloc(1, strlen(xdgdatahome) + strlen(dwmdir) + 2);
+
+		if (sprintf(pathpfx, "%s/%s", xdgdatahome, dwmdir) <= 0) {
+			free(pathpfx);
+			return;
+		}
+	} else {
+		/* space for path segments, separators and nul */
+		pathpfx = ecalloc(1, strlen(home) + strlen(localshare)
+		                     + strlen(dwmdir) + 3);
+
+		if (sprintf(pathpfx, "%s/%s/%s", home, localshare, dwmdir) < 0) {
+			free(pathpfx);
+			return;
+		}
+	}
+
+	/* check if the autostart script directory exists */
+	if (! (stat(pathpfx, &sb) == 0 && S_ISDIR(sb.st_mode))) {
+		/* the XDG conformant path does not exist or is no directory
+		 * so we try ~/.dwm instead
+		 */
+		char *pathpfx_new = realloc(pathpfx, strlen(home) + strlen(dwmdir) + 3);
+		if(pathpfx_new == NULL) {
+			free(pathpfx);
+			return;
+		}
+		pathpfx = pathpfx_new;
+
+		if (sprintf(pathpfx, "%s/.%s", home, dwmdir) <= 0) {
+			free(pathpfx);
+			return;
+		}
+	}
+
+	/* try the blocking script first */
+	path = ecalloc(1, strlen(pathpfx) + strlen(autostartblocksh) + 2);
+	if (sprintf(path, "%s/%s", pathpfx, autostartblocksh) <= 0) {
+		free(path);
+		free(pathpfx);
+	}
+
+	if (access(path, X_OK) == 0)
+		system(path);
+
+	/* now the non-blocking script */
+	if (sprintf(path, "%s/%s", pathpfx, autostartsh) <= 0) {
+		free(path);
+		free(pathpfx);
+	}
+
+	if (access(path, X_OK) == 0)
+		system(strcat(path, " &"));
+
+	free(pathpfx);
+	free(path);
+}
+
 void
 scan(void)
 {
@@ -2148,6 +2231,7 @@ main(int argc, char *argv[])
 		die("pledge");
 #endif /* __OpenBSD__ */
 	scan();
+	runautostart();
 	run();
 	cleanup();
 	XCloseDisplay(dpy);